The holding click to move I couldn’t explain but I have noticed that on landscapes it tends to work like that, I set my movement to be controlled with wasd to work around this, as far as exiting the nav mesh, have you considered invisible walls?
The holding click to move I couldn’t explain but I have noticed that on landscapes it tends to work like that, I set my movement to be controlled with wasd to work around this, as far as exiting the nav mesh, have you considered invisible walls?